Bookshelf speaker pairing with subwoofer

You can start with KEF LS-50s and go up from there. From 60Hz up they are Class A in every regard. They are rear ported and do come with port plugs for subwoofer pairing. From there, you will get maybe something that will play louder, or have a different tonal balance, or cost multiples what the LS-50s cost, but not likely to overall play better.  The next step up would be a 6" 2-way stand mounts, and there's no shortage of those from most high end speaker manufacturers. Beyond that would be a d'Appolito (Mid-Tweet-Mid or MTM) design. These will give you the greatest maximum volume, if that's a concern, simply because they have the speaker surface area to push more air. MTM speakers are also a. It taller and so tend to throw a larger soundstage than smaller speakers, that might be an issue in your good-sized room. I'd Look to Revel, Focal, Dynaudio, KEF, Monitor Audio, B&W, Sonus Faber, ATC, all have different series with increasing costs for the same basic config, but more expensive components, crossovers, cabinet details. SIlver, Gold, Platinum; Good, Better, Besr, if you  will.

So, given your components, typically you would be shopping in the $2K range if you're looking to maximize your current components. But, if looking long term and wanting to upgrade your system in a significant way then maybe $3K - $5K. I would look used... in the less than 7 year range. 

The music room has evolution acoustics mm1 half price with stand1600$.I have some of these they are fantastic and a bargain.they have high dollar components in them ribbon tweeter ceramic mids.enjoy the music

Thanks for all the input. I am going to experiment with different speakers. Up first will be the Acoustic Energy AE1 active speakers. Second, I will try the low budget Triangle BR04. Then maybe the MoFi Sourcepoint 8 or 10. If I am not happy, then a floorstander. See what happens. Personal taste will probably play a big role.

I just picked up the excellent Studio Electric M4  Monitors.     I'm using them with a REL and I think the fact that they also are sealed acoustic suspension allow them to integrate so well.   

Around $3200 and worth every penny.